Canadian Spatial Reference System Precise Point Positioning (CSRS-PPP) – Tools and Applications

National Resources Canada
[ Link to nrcan.gc.ca ]

Overview – Natural Resources Canada’s Canadian Geodetic Survey (CGS) provides several geodetic tools and their corresponding desktop applications, enabling accurate positioning, heights and coordinates transformations.
The Canadian Spatial Reference System (CSRS) Precise Point Positioning (PPP) tool allows the computation of higher accuracy positions of raw Global Navigation Satellite System (GNSS) data, the GPS·H tool performs the conversion of ellipsoidal heights to orthometric heights, the TRX tool performs transformation of coordinates, INDIR does geodetic Direct (computes the geographic coordinates of the end point) or Inverse (computes distance and azimuth between two points) computations and finally, the NTv2 tool allows for the transformation of coordinates between the NAD27, ATS77, NAD83(Original), and NAD83(CSRS) reference systems using binary Grid Shift Files (.GSB format) where available. Note that the GSRUG and TRNOBS applications have been discontinued and replaced by TRX.